public class Example8_2{
       public static void main(String args[]){
          String s1 , s2;
          s1 = new String ("天道酬勤");
          s2 = new String ("天道酬勤");
          System.out.println(s1.equals(s1));
          System.out.println(s1==s2);
          String s3,s4;
          s3 = "we are student";
          s4= new String ("we are student ");
          System.out.println(s3.equals(s4));
          System.out.println(s3==s4);
          String s5,s6;
          s5 = "勇者无敌";
          s6 = "勇者无敌";
          System.out.println(s5.equals(s6));
          System.out.println(s5==s6);
       }
}
